# Copyright 2020 The TensorStore Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Downloads the intersphinx inventories referenced by `conf.py`.

This allows the documentation build to be hermetic.
"""

import os
import requests

if __name__ == "__main__":
    docs_dir = os.path.dirname(os.path.realpath(__file__))
    conf_path = os.path.join(docs_dir, "conf.py")
    conf_module = {
        "__file__": conf_path,
    }
    with open(conf_path, "r") as f:
        exec(f.read(), conf_module)
    intersphinx_mapping = conf_module["intersphinx_mapping"]
    for _, (url, (local_path, _)) in intersphinx_mapping.items():
        if not url.endswith("/"):
            url += "/"
        full_url = url + "objects.inv"
        full_path = os.path.join(docs_dir, local_path)
        print("Fetching: %r" % (full_url,))
        resp = requests.get(full_url)
        resp.raise_for_status()
        os.makedirs(os.path.dirname(full_path), exist_ok=True)
        with open(full_path, "wb") as f:
            f.write(resp.content)
        print("Fetched %s -> %s" % (full_url, full_path))
